I understand the complexity of this casting process. However, as much as I like it I just need 6u good quality spacebar with Topre mount for HHKB. The Topre to MX slider is the least of the problem for me but the spacebar is the biggest problem. Without modding HHKB case too much, having correct size spacebar in correct profile is the best thing to have. I really hope to see cheaper option for Topre in more variety of colour here as well.